/*
 *  Copyright 2011 Iurii Dunko, Iana Potochniak.
 * 
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 * 
 *       http://www.apache.org/licenses/LICENSE-2.0
 * 
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *  under the License.
 */

package org.opu.yyminijava.syntaxtree;

import org.opu.yyminijava.visitor.Visitor;

/**
 * 
 * @author Iurii Dunko
 * @author Iana Potochniak
 */
public class PrefixExpression implements Rule {

	private static final long serialVersionUID = 1323110697210L;

	/** Can be null if we don't have prefix */
	private PrefixOp prefixOp;
	private PostfixExpression postfixExpression;

	public PrefixExpression(PrefixOp prefixOp,
			PostfixExpression postfixExpression) {
		this.prefixOp = prefixOp;
		this.postfixExpression = postfixExpression;
	}
	
	public PrefixExpression(PostfixExpression postfixExpression) {
		this.postfixExpression = postfixExpression;
	}

	public PrefixExpression() {
	}

	public PrefixOp getPrefixOp() {
		return prefixOp;
	}

	public void setPrefixOp(PrefixOp prefixOp) {
		this.prefixOp = prefixOp;
	}

	public PostfixExpression getPostfixExpression() {
		return postfixExpression;
	}

	public void setPostfixExpression(PostfixExpression postfixExpression) {
		this.postfixExpression = postfixExpression;
	}

    @Override
	public String toString() {
		return (prefixOp != null ? String.valueOf(prefixOp) : "")
				+ String.valueOf(postfixExpression);
	};

    @Override
    public void accept(Visitor visitor) {
        if (prefixOp != null) {
            visitor.visit(prefixOp);
        }
        visitor.visit(postfixExpression);
    }

}
